Theory:

     There was no reply. He turned to look at his parents. They were not there, ahead of him. He turned to look on either side. They were not there. He looked behind. There was no sign of them.
 
     A full, deep cry rose within his dry throat and with a sudden jerk of his body he ran from where he stood, crying in real fear, “Mother, Father.” Tears rolled down from his eyes, hot and fierce; his flushed face was convulsed with fear. Panic-stricken, he ran to one side first, then to the other, hither and thither in all directions, knowing not where to go. “Mother, Father,” he wailed. His yellow turban came untied and his clothes became muddy.
Explanation:
 
When his parents did not reply, he turned towards them. He saw that they were nowhere around. He looked around and behind, but his parents were nowhere to be seen.
 
The boy cried loudly, jerked his body, and ran here and there calling out for his parents. He was full of fear, and tears started rolling down his cheeks. As he wailed and ran around his turban opened and his clothes became muddy.
 
Meanings of difficult words:
 
Numbers
Word
Meanings
1.
Fierce
Wild.
2.
Hither and thitherHere and there.
Reference:
National Council of Educational Research and Training (2006). Moments. The lost child - Mulk Raj Anand (pp. 01-06). Published at the Publication Division by the Secretary, National Council of Educational Research and Training, Sri Aurobindo Marg, New Delhi.